Thrust-take-up device



F. W. BELK AND A. E. VARNEIL THRUST TA'KE-UP DEVICE.

APPLICATION FILED JAN. I9, 192i.

Patented July 12,1921.

2 SHEETS-SHEET l- ?"QOK WBe.

( (94 Andrg livaflnen INVENTOR.

ATTORNEY.

v THRUST TAKE-UP 0 APPLICATION FILED JAN.

Patented July 12, 1921;

2 SHEETS-SHEET 2.

INVENTOR.

ATTORNEY.

of internal combustion engines, particularly to a device of this character to eliminate the objectionable results 0 entrain STATES vrri're ri'r .orrics.

EBAHK W. IBIELK AND ANDREW VARNER, 0F OXFORD, MISSISSIPPI.

THRUST-TAKE-UP DEVICE.

Application filed January 19, 1921.

T 0 all whomit may concern.

1 Be it known that we, FRANK W. BELK and ANDREW ELIAs VARNER, citizens of the United States,'residing at Oxford, in the county of Lafayette and State of Mississippi, have invented certain new and useful Improvements in Thrust-Take-Up Devices, of which the following is a specification, ref erence' being had to drawings.

This invention relates to improvements in thrust take-up devices for the crank shafts and more adapted for employment upon the crank shaft of internal combustion engines of the type at present used in the Ford automobile. An important I f the end thrust of the crank shaft which, in the type of engine above identified, is a source 0 considerable annoyance and difficulty in both the operation of t e engine and of thelights of the automobile in which the engine is employed.

This is due to the fact that in the construction of these engines the generator embodies portions which are carried by the engine body and base and other parts which are carried by the crank shaft. Accordingly, when wear' develops due to the thrust these ortions of the generator are separated, resulting in: a reduction of the E. M. F. delivered by the generator. This in turn results-v indifficulty in starting the engine power, missing during t e operation of the engine and flickering and often failure .of the lights. A further object of the invention is to provide a device of the above" character which may be oppickly and easil installed and which may e adjusted to ta e up subsequent wear without its removal from the crank shaft. p y

' Otherobjects and advantages of the invention will become apparent throughout the course of the following description:

In the accompanying drawings we have not illustrated the generator and its associated mechanism since these portions of the power plant form no' part of the invention,

ut have simply shown those portions pf the power plant contiguous to our thrust bearing and with which our bearing coacts.

Specification of Letters Patent.

the accompanying.

object of the invention is bearing Patented Jul 12, 1921.

Serial No. 438,463.

In these drawings Figure 1 is a fragmentary perspective of the front endof an engine showing our thrust take up applied thereto;

F g. 2 is a planview thereof Flg. 3 is a front elevation take; up device;

4 is a' section on the line it-4 of 0 e fig. 5 is a section on the line 5 -5 of ofthe thrust Fig.3;

1g, 6 is a front elevation of the pulley en aging plate;

g. 7 is a section on the line 7'7 thereof; 7 Fig. 8 1s a rear elevation of-the bearing v enga 'ng plate;

. g. -9 is a top plan view thereof, and I 'F1g. 10 is a perspective of the, interposed or antl-friction plate.

Referring now more particularly to the drawings, the numeral 10 indicates the crank hich shaft of, an internal comb'ustion engine w 18 supported adjacent its forward end by a 11 carried by the engine. The portion of of a cover plate 12 forming a the timing gearing of the engine, ing gearing not being herein shown. This cover plate 12 has usually formed thereon a strengthening rib or flange 13 which extends upwardly in a vertical direction from the center of the portion of the coverfplate housing for forming the bearing.

The forward end of the shaft projects beyond the forward endof the bearing, as at 14, and is generally provided adjacent its outer end with 'a transversely extending pin 15 which, in the usual construction, forms a starting pin for the engine and likewise forms a retaining means for the fan belt pulley. In accordance with our invention, we rovide a fan belt pulley 16 of a slightly mo ifiedconstruction as will hereinafter appear, the pulley being provided with a socket 16 receiving the end of the shaft and with a diametrically extending opening 1 through which the pin 15 extends. The pulthe timthe bearing 11 is usually a portion ley is further provided with a transversely extending opening receiving a cotter pin 18 which extends through the pin 15 and prean axial extension 16 through which ex the spirit of our invention; and we, accordtends a pin 19 forming a starting pin. lngly, do not -l11n1t ourselves to such specific he rear face of the pulley 16 is provided structure except as herelnafter claimed.

with a rearwardly extending marginal flange at we clalrn 1s:

2 orming a housing wlthin which is re- 1 In a thrust take up for the crank shafts 7o ce-ived a steel plate 21 having a plurality of of internal combustion englnes, a member circumferentially spaced sockets 22 formed secured to the crank shaft forwardly of the in the forward face thereof for a purpose front end bearing thereof, a stat onary plate steel plate 21 is abutted by the plate 23 of Ward end of the front end bearing, a second approximately the same diameter and plate surrounding the shaft ad acent the formed of some suitable anti-friction materear face of asmember and provided in its rial, such as bearing bronze, babbitt or the forward face with sockets an anti-friction like. The rear face of the plate 23 is in turn dev ce disposed intermediate said plates, ad-

5 abutted by the steel plate 24 having formed Justlng screws extending through said memupon its rear face, at the upper edge thereof, her and having their rear ends enga ed in spaced, rearwardly extending ears 25 affordthe sockets of the second plate and thereb ing therebetween a notch receiving the flange holding said second plate against rotation 13 of the plate 12. It will be seen that the With relation to the. member.

:0 plate 24 is held by the ears 25 against rota- 2., In a thrust take-up for the crank tion and that, accprdingly, no friction is apshafts of internal combustion engines emplied against the forward end of the bearing bodying the usual front end bearing for the 11 of the shaft 10 which would tend to cause crank shaft, a strengthening rib extendin 25 The pulley 16 has formed therethrough. bearing, a member'fsecured to the crank a plurality of screw threaded open ngs 26 shaft at the forward end of the front end 1 corresponding in number and arrangement bearing thereof, a plat surrounding th to the sockets 22 of the plate 21, each of the shaft and abutt ng the forward end of the Openings 26 having their forward ends front end bearin rearwardly extending so counter-sunk, as at 27. These screw threaded ears formed on said plate and engaging the adjusting screws 28 which extend through Vent rotation of said plate, a second plate the threaded bores 26 and have their inner surroundlng the shaft adja ent th rear f ends reduced, as at 29, for enga ement 1n 0f the member, an anti-friction device dis- 35 the sockets 22 of the plate 21. t will be posed intermediate said plates and means seen that by ad usting the screws 28, the carried by said member for holding said 40 23 and the plate 23 in turn contacts the plate In a thrust take-up for the crank shafts be seen that the shaft 10 may be drawn forcured to the crank shaft forwardly of the wardly in its bearing by "adjustment of these front end, bearing thereof screws. When the desired adjustment has plate surrounding the shaft and abutting 45 been secured, the adjusting screws 28 may t is forward end of the front end bearing, be locked against movement by means of lock a second plate surrounding the shaft adnuts 30, which are .preferably set within the Jacenflthe ,rear face of the pulley, an antirecesses formed by counter-sinking the ends fr ction device disposed in ermediate said of the threaded bores 26 in order that they plates, said second plate being provided in 50 may not be exposed beyond the surface of t e forward face thereof with a plurality of the pulley. The plate 23 is preferably procircumferentially spaced sockets, adjustin vided with grooves 31 by means of .which screws having threaded engagement with the lubrication may be supplied thereto, these pulley and having the threaded rear ends engrooves being provided in each of its faces. ga'ged in the sockets of the second plate and 55 From the foregoing it will be obvious that a marginal fiangeformed on the rear face we have constructed a thrust bearing for use of said pulley arid overhanging the second with internal combustion engines which is named plate. p .7 particularly well adapted for the urpose 4. "The combination with the crank shaft for which it is intended by reason of the fact of an internal combustion engine embodyin 60 that positioning. thereof may be variably ad the usual front, end bearing for the crank justed w'hen desired to take upon any further shaft and through which the crank shaft exloosenlng caused-by wear. It will likewise tends, the crankshaft being provided adjabe obvious that many changes in the concent its forward end with adiametrical openstruction as hereinbefore set forth are posing, of a fan belt pulley having a socket re- 05 sible without in any manner departing from ceiving the forward end of the shaft and'130 'having diametrical openings formed thei e- 7 said ulley and engaging a portion of said,

in adapted to aline with the opening of said antiriction bearing for adjusting the same 10 shaft for the reception of a pin, an axial exlongitudinally of the shaft.

tension formed on theforward face of said In testimony whereof we hereunto aflix our pulley a starting pin carried by said axial signatures. v

extension, an anti-friction bearing disposed intermediate the rear face of said pulley and L 7 said bearing and means extending thr'ough ANDREW ELIAS VARNER. 

